Ability to install tarantool from a local executable

[TarantoolBot]

Related dev. issue(s): tarantool/tt#429

Product: TT CLI
Since: TBD
Root document: https://www.tarantool.io/en/doc/latest/reference/tooling/tt_cli/install/
SME: @ askalt

Details

Now, one can add a pseudo-installation of tarantool, which will point
to the executable file in the local build directory,
and then use this installation with tt run command.
For example:

make -j16 -C ~/src/tarantool/build
tt install tarantool-dev ~/src/tarantool/build
tt run # runs the binary compiled above

Requested by @ askalt in tarantool/tt@056217d.

The --include-dir option:

testuser@tarantool-ee-amd64:~/test-env$ tt install tarantool-dev distfiles/tarantool/build/
   • Changing symlinks...     
   • Tarantool headers location was not specified`tt build`, `tt rocks` may not work properly.
  To specify include files location use --include-dir option.
   • Done.                    
testuser@tarantool-ee-amd64:~/test-env$ tt install tarantool-dev distfiles/tarantool/build/ --include-dir distfiles/tarantool/build/
   • Changing symlinks...     
   • tarantool headers directory set as /home/testuser/test-env/distfiles/tarantool/build.
   • Done.                    

Definition of done

• The tt install doc page explains the new installation scenario